Geostatistical methods were used in combination of GIS techlonogy to analyze the spatial distribution characteristics of available silicon

available calcium and available magnesium in cultivated soil in Xinhui district

Jiangmen. The results indicated that data of each variable fitted normal distribution after log transformation. Semivariogram analysis showed that 3 soil elements were moderately spatially dependent in a given spatial range and available calcium were strongly spatially dependent. With the Kriging analysis

results showed that the area with the content of available silicon in the range of 115~230 mg/kg is 34.9% of the investigation region

mainly distributed in the middle and the northeast. The area with the content of available calcium in the range of >1 000 mg/kg is 71.6% of the investigation region

mainly distributed in the northeast

middle

northwest and the south. The area with the content of available magnesium in the range of >300 mg/kg is 29.8% of the investigative region

mainly distributed in the northeast.